<template>
  <div ref="chartRef" :style="{ height, width }"></div>
</template>
<script lang="ts">
  import { defineComponent, PropType, ref, Ref, reactive, watchEffect } from "vue"
  import { useECharts } from "/@/hooks/web/useECharts"

  export default defineComponent({
    name: "Line",
    props: {
      chartData: {
        type: Array,
        default: () => [],
      },
      option: {
        type: Object,
        default: () => ({}),
      },
      width: {
        type: String as PropType<string>,
        default: "100%",
      },
      height: {
        type: String as PropType<string>,
        default: "calc(100vh - 78px)",
      },
    },
    setup(props) {
      const chartRef = ref<HTMLDivElement | null>(null)
      const { setOptions, echarts } = useECharts(chartRef as Ref<HTMLDivElement>)
      const option = reactive({
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "shadow",
            label: {
              show: true,
              backgroundColor: "#333",
            },
          },
        },
        xAxis: {
          type: "category",
          data: [],
        },
        yAxis: {
          type: "value",
        },
        series: [
          {
            type: "line",
            showSymbol: false,
            smooth: true,
            areaStyle: {},
            data: [],
          },
        ],
      })

      watchEffect(() => {
        props.chartData && initCharts()
      })

      function initCharts() {
        if (props.option) {
          Object.assign(option, props.option)
        }
        let seriesData = props.chartData.map((item) => {
          return item.value
        })
        let xAxisData = props.chartData.map((item) => {
          return item.name
        })
        option.series[0].data = seriesData
        option.xAxis.data = xAxisData
        setOptions(option)
      }
      return { chartRef }
    },
  })
</script>
